Jky mndandanda wapawiri siteji vacuum extruder ndi fakitale yathu yopangidwa ndi kupanga zida zatsopano zopangira njerwa kudzera muzochitikira zapamwamba zapakhomo ndi zapadziko lonse lapansi.The pawiri siteji vacuum extruder zimagwiritsa ntchito zopangira malasha gangue, malasha phulusa, shale ndi dongo.Ndizida zabwino zopangira njerwa zamitundu yonse, njerwa zopanda pake, njerwa zosakhazikika komanso zobowoleza.
Makina athu a njerwa ali ndi mphamvu zogwiritsira ntchito, mawonekedwe ophatikizika, kugwiritsa ntchito mphamvu zochepa komanso kupanga kwakukulu.